Profit Or Loss [Abstract]
| Concept |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
|---|---|---|---|---|
| Profit or loss [abstract] | ||||
| Profit (loss) [abstract] | ||||
| Revenue |
10,285,100,000
GBP
|
— | — |
10,111,100,000
GBP
|
| Profit (loss) from operating activities |
623,300,000
GBP
|
— | — |
618,500,000
GBP
|
| Finance income |
10,700,000
GBP
|
— | — |
10,400,000
GBP
|
| Finance costs |
65,300,000
GBP
|
— | — |
73,200,000
GBP
|
| Profit (loss) before tax |
568,700,000
GBP
|
— | — |
555,700,000
GBP
|
| Tax expense (income) |
125,900,000
GBP
|
— | — |
125,700,000
GBP
|
| Profit (loss) |
442,800,000
GBP
|
442,800,000
GBP
|
430,000,000
GBP
|
430,000,000
GBP
|
| Earnings per share [text block] | — | — | — | — |
| Earnings per share [abstract] | ||||
| Earnings per share [line items] | ||||
| Basic earnings per share [abstract] | ||||
| Basic earnings (loss) per share |
1.327
|
— | — |
1.288
|
| Diluted earnings per share [abstract] | ||||
| Diluted earnings (loss) per share |
1.318
|
— | — |
1.283
|